1800 watt Inverter drained battery while driving?
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Xenergiserx, Sep 15, 2021.
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Xenergiserx Thanks this.
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skallagrime Thanks this.
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If you want best advise post your truck make, model, year. Pictures will tell a lot.
black_dog106 Thanks this. -
1, replace batteries, having known good batteries is a must going into winter (technically more for running in the cold, but peace of mind on the road is priceless too)
2, test alternator, if its actually pushing 15 like you say, replace immediately -
And it runs at 14.2 v. Not 15. Thanks guys for your help and helping a rookie. Owner. Didn’t sleep last night working on the truck. -
Next step, trace every single big wire, inspect all ends for cracked/corroded lugs, and ideally measure voltage drop end to end to make sure its not corroded in the middle.Xenergiserx Thanks this. -
Op
You can have your voltage in range but if your alternator is not putting out enough amperage
It won't maintain the draw on your battery's that your inverter is putting on them...mtoo Thanks this. -
Everyone is overthinking this, batteries die, sometimes very quickly.
Just run the truck and see how it performs.Rideandrepair Thanks this.
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